/**
* DOCUMENT ME
* @param mixed $fileIn
* @param mixed $fileOut
* @param mixed $scaleParameters
* @param mixed $cropParameters
* @param mixed $quality
* @return mixed
*/
private static function scaleGd($fileIn, $fileOut, $scaleParameters = array(), $cropParameters = array(), $quality = 75)
{
// gd version for those who can't install netpbm, poor buggers
// "handles" PDF by rendering a blank white image. We already superimpose a PDF icon,
// so this should work well
// (if you can install ghostview, you can install netpbm too, so there's no middle case)
// Special case to emit the original. This preserves transparency in GIFs and is faster for everything. (PNGs can always preserve
// alpha channel in anything under 1024x768 or when gd is the only backend enabled.) WARNING: keep this up to date if new
// capabilities are added - we need to make sure they are not active etc. before using this trick. TODO: check for this in
// netpbm land too, right now in a typical configuration it's not checked over 1024x768
// Default to normal orientation
$orientation = 1;
$imageInfo = getimagesize($fileIn);
// Don't panic on a PDF, fall through to the fake handler for that.
if ($imageInfo) {
$width = $imageInfo[0];
$height = $imageInfo[1];
$orientation = aImageConverter::getRotation($fileIn, $imageInfo);
if ($imageInfo[2] === IMAGETYPE_JPEG) {
// Some EXIF orientations swap width and height
switch ($orientation) {
case 5:
// vertical flip + 90 rotate right
// vertical flip + 90 rotate right
case 6:
// 90 rotate right
// 90 rotate right
case 7:
// horizontal flip + 90 rotate right
// horizontal flip + 90 rotate right
case 8:
// 90 rotate left
$tmp = $width;
$width = $height;
$height = $tmp;
break;
}
}
$infoIn = pathinfo($fileIn);
$infoOut = pathinfo($fileOut);
// Try not to do any work if we are not changing anything
if ($orientation == 1) {
if ((!count($scaleParameters) || isset($scaleParameters['xysize']) && $scaleParameters['xysize'][0] == $width && $scaleParameters['xysize'][1] == $height) && strtolower($infoIn['extension']) === strtolower($infoOut['extension']) && !count($cropParameters)) {
copy($fileIn, $fileOut);
return true;
}
}
}
if (preg_match('/\\.pdf$/i', $fileIn)) {
$in = self::createTrueColorAlpha(100, 100);
imagefilledrectangle($in, 0, 0, 100, 100, imagecolorallocate($in, 255, 255, 255));
} else {
$in = self::imagecreatefromany($fileIn);
if ($orientation != 1) {
// Note that gd rotation is CCL
switch ($orientation) {
case 2:
// horizontal flip
aImageConverter::horizontalFlip($in);
break;
case 3:
// 180 rotate left
$in2 = imagerotate($in, 180, imagecolorallocate($in, 255, 255, 255));
imagedestroy($in);
$in = $in2;
break;
case 4:
// vertical flip
aImageConverter::verticalFlip($in);
break;
case 5:
// vertical flip + 90 rotate right
aImageConverter::verticalFlip($in);
$in2 = imagerotate($in, 270, imagecolorallocate($in, 255, 255, 255));
imagedestroy($in);
$in = $in2;
break;
case 6:
// 90 rotate right
$in2 = imagerotate($in, 270, imagecolorallocate($in, 255, 255, 255));
imagedestroy($in);
$in = $in2;
break;
case 7:
// horizontal flip + 90 rotate right
aImageConverter::horizontalFlip($in);
$in2 = imagerotate($in, 270, imagecolorallocate($in, 255, 255, 255));
imagedestroy($in);
$in = $in2;
break;
case 8:
// 90 rotate left
$in2 = imagerotate($in, 90, imagecolorallocate($in, 255, 255, 255));
imagedestroy($in);
$in = $in2;
break;
}
}
}
if (!$in) {
return false;
}
if (preg_match("/\\.(\\w+)\$/i", $fileOut, $matches)) {
$extension = $matches[1];
$extension = strtolower($extension);
} else {
imagedestroy($in);
return false;
}
$top = 0;
$left = 0;
$width = imagesx($in);
$height = imagesy($in);
if (count($cropParameters)) {
if (isset($cropParameters['top'])) {
$top = $cropParameters['top'];
}
if (isset($cropParameters['left'])) {
$left = $cropParameters['left'];
}
if (isset($cropParameters['width'])) {
$width = $cropParameters['width'];
}
if (isset($cropParameters['height'])) {
$height = $cropParameters['height'];
}
$cropped = self::createTrueColorAlpha($width, $height);
imagealphablending($cropped, false);
imagesavealpha($cropped, true);
imagecopy($cropped, $in, 0, 0, $left, $top, $width, $height);
imagedestroy($in);
$in = null;
} else {
// No cropping, so don't waste time and memory
$cropped = $in;
$in = null;
}
if (count($scaleParameters)) {
$width = imagesx($cropped);
$height = imagesy($cropped);
$swidth = $width;
$sheight = $height;
if (isset($scaleParameters['xsize'])) {
$height = $scaleParameters['xsize'] * imagesy($cropped) / imagesx($cropped);
$width = $scaleParameters['xsize'];
$out = self::createTrueColorAlpha($width, $height);
imagecopyresampled($out, $cropped, 0, 0, 0, 0, $width, $height, imagesx($cropped), imagesy($cropped));
imagedestroy($cropped);
$cropped = null;
} elseif (isset($scaleParameters['ysize'])) {
$width = $scaleParameters['ysize'] * imagesx($cropped) / imagesy($cropped);
$height = $scaleParameters['ysize'];
$out = self::createTrueColorAlpha($width, $height);
imagecopyresampled($out, $cropped, 0, 0, 0, 0, $width, $height, imagesx($cropped), imagesy($cropped));
imagedestroy($cropped);
$cropped = null;
} elseif (isset($scaleParameters['scale'])) {
$width = imagesx($cropped) * $scaleParameters['scale'];
$height = imagesy($cropped) * $scaleParameters['scale'];
$out = self::createTrueColorAlpha($width, $height);
imagecopyresampled($out, $cropped, 0, 0, 0, 0, $width, $height, imagesx($cropped), imagesy($cropped));
imagedestroy($cropped);
$cropped = null;
} elseif (isset($scaleParameters['xysize'])) {
$width = $scaleParameters['xysize'][0];
$height = $scaleParameters['xysize'][1];
// This was backwards until 05/31/2010, making things bigger rather than smaller if their
// aspect ratios differed from the original. Be consistent with netpbm which makes things
// smaller not bigger
if ($width / $height > $swidth / $sheight) {
// Wider than the original. So it will be narrower than requested
$width = ceil($height * ($swidth / $sheight));
} else {
// Taller than the original. So it will be shorter than requested
$height = ceil($width * ($sheight / $swidth));
}
$out = self::createTrueColorAlpha($width, $height);
imagecopyresampled($out, $cropped, 0, 0, 0, 0, $width, $height, $swidth, $sheight);
imagedestroy($cropped);
$cropped = null;
}
} else {
// No scaling, don't waste time and memory
$out = $cropped;
$cropped = null;
}
$extension = strtolower($infoOut['extension']);
if ($extension === 'gif') {
imagegif($out, $fileOut);
} elseif ($extension === 'jpg' || $extension === 'jpeg') {
imagejpeg($out, $fileOut, $quality);
} elseif ($extension === 'png') {
imagepng($out, $fileOut);
} else {
return false;
}
imagedestroy($out);
$out = null;
return true;
}
